Nut-lock



(No Model.)

B. WOODALL & T. E. ORR. NUT LOCK.

No. 602,549. Patented Apr. 19,1898.

miiltifddj: japan/6072s: m Q Ma w W UNITED STATES PATENT OEEICE.

BENJAMIN WVOODALL, OF WILKINSBURG, AND THOMAS E. ORR, OF PITTSBURG, PENNSYLVANIA.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 602,549, dated April 19, 1898.

Application filed March 24, 1897. erial No. 629,024. (No model.)

To all whom it may concern.-

Be it known that we, BENJAMIN WOODALL, a resident of WVilkinsburg, and THOMAS E. ORR, a resident of Pittsburg, in the county of Allegheny, State of Pennsylvania, have invented a new and useful Improvement in Nut-Locks; and We do hereby declare the following to be a full, clear, and exact description thereof.

Our invention relates to nut-locks, its object being to provide a simple device of this kind which will be very effective in holding the nut in place and at the same time one which is adapted for railroad and bridge work, as well as for finer work where a neat finished appearance is required.

Our invention comprises, generally stated, a washer adapted to encircle the bolt and havinga seat formed therein between the central opening and the periphery of said washer, a piece of spring metal bent to fit said seat, said piece of metal having oppositely-inclined projections on its inner and outer faces, the inclined projection on the inner face of said piece of metal being adapted to be pressed into contact with the material through which the bolt passes, and the nut engaging with the oppositely inclined projection on the outer face of said piece of metal, whereby said nut is securely locked in place.

To enable others skilled in the art to make and use our invention, we will describe the same more fully, referring to the accompanying drawings, in which- Figure 1 is a side view,in section,of our improved nut-lock, the washer and material through which the bolt passes being shown in section. Fig. 2 is a face view of the washer. Figs. 3 and 4 are views of the piece of metal adapted to enter the seat in said washer. Fig. 5 is a top view with a portion of the upper part of the washer in section to show the piece of metal in its seat and engaging with the nut and the material through which the bolt passes. Figs. 6, 7, 8, and 9 show a modified form of our invention.

Like letters indicate like parts in each of the figures.

Our invention is applicable to all kinds of work in connection with which nut-locks are used, and in the drawings we have illustrated it without reference to any particular class of Work, illustrating its use in one of the simplest forms.

The letter a designates the material through which the bolt 1) passes. Surrounding the bolt 1) is the washer c, which has the seat 61 formed therein. This seat (1 is adapted to receive the piece of metal 6, said piece of metal fitting neatly therein. This piece of metal 6 is in this instance formed of spring-steel and is bent to such a shape as to correspond with the seat d,and accordingly said piece of metal is bent into an oblong form, the ends thereof being preferably out obliquely, as at e, and said ends projecting above and below the main portion of the metal, so that we have the projection e on the outer face of said piece of metal and the projection e on the inner face. We also have the oppositely-extending inclines e on each of said projections,the incline being a gradual one and leading up to the point of the projection. As stated, this piece of metal is adapted to fit neatly within the seat 01 of the washer, and when the nut is screwed up on the bolt said nut comes into contact with the projection e on the outer face of the piece of metal 6 and acts to force the inner projection e into the material a, through which the bolt passes, as clearly shown in Fig. 5. The sharp point of the inner projection e is forced into the material a, while at the same time the nut being forced into contact with the outer projection said outer projection acts to bind said nut, so that when said nut is screwed up tight it is so bound and held against backward movement that it remains securely in place. As the projections are oppositely inclined the washer is held from turning by the inner projection, while the nut is held by the outer projection. The piece of metal e being formed of spring-steel and its biting edges having a certain amount of resiliency, the severe strain brought upon the nut-lock is relieved by the resiliency of the piece of metal e, and consequently there is less liability of the nut working loose.

In Figs. 6, 7, 8, and 9 we have illustrated another form of our invention in which the piece of metal f is formed in the shape of the letter S, the projections f f projecting beyond the body of the washer f and fitting in a seat f therein in the same manner as in the first instance. The projection f on the inner face of the piece of metal f is in the same manner forced against the material through which the bolt passes, while the outer projection f is engaged by the nut. This piece of metal, being also formed of spring-steel and shaped in the manner described, will possess the requisite resiliency and will act to hold the nut securely in place.

What we claim as our invention, and desire to secure by Letters Patent, is-

l. In a nut-lock, a washer having a seat formed therein between the central opening and the periphery of said washer, a piece of spring metal bent to fit said seat, the ends of said piece of metal having oppositely-inclined projections extending out beyond the inner and outer faces of the. washer, substantially as set forth.

2. In a nut-lock, a washer having a seat formed therein between the central opening and the periphery of said washer, a piece of spring metal bent to fit therein, the ends of said piece of metal being cut obliquely and having oppositely-inclined projections extending out beyond the inner and outer faces of the washer, substantially as set forth.

In testimony whereof We,the said BENJAMIN WOODALL and THOMAS E. ORR, have hereunto set our hands.

BENJAMIN WOODALL. THOMAS E. ORR. WVitnesses:

RoB'r. D. TOTTEN, ROBERT C. TOTTEN. 

